The speed of light will change in which of the following situations? The light moves through glass then air.

The source of light is rotated.

The light becomes brighter over time.

The light source is accelerated.

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.